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Jagadale P.N.,Bharati Vidyapeeth Deemed University | Jagtap P.P.,Metal Oxide Research Laboratory | Joshi M.G.,Meridian | Bamane S.R.,Raja Shripatrao Bhagwantrao Mahavidyalaya
Advanced Materials Letters | Year: 2016

Novel porous bioactive hydroxyapatite (HAP) nanocrystallites were synthesized by auto-combustion technique. The texture properties of the HAP nanopowder were determined through series of characterization techniques. The thermal decomposition behaviour and required sintering temperature of citrate precursor to phase formation of the sample was checked by thermogravimetric analysis (TG-DTA). The hexagonal structure and porous nature of the material were estimated by using X-ray diffraction (XRD) and electron microscopy scanned with different magnifications. Phase formation of HAP was determined by FTIR technique. Transmission electron microscopic (TEM) study indicated the nanostructure of the ceramics, particle size was found to be 30 - 35 nm. These nanoparticles were evaluated for the qualitative and quantitative determination of different elements by energy-dispersive X-ray spectroscopy. In vitro MTT assays showed HAP nanopowder have good biocompatibility and promotes cell proliferation. This nanostructured HAP powder with enhanced biocompatibility can be potentially used as a material for bone tissue engineering. © 2016 VBRI Press. Source


Khetre S.M.,Dahiwadi College Dahiwadi Talman | Chopade A.U.,Dahiwadi College Dahiwadi Talman | Khilare C.J.,Dahiwadi College Dahiwadi Talman | Jadhav H.V.,Kisanveer Mahavidyalaya Wai | And 2 more authors.
Journal of Materials Science: Materials in Electronics | Year: 2013

The X-ray diffraction pattern of nanocrystalline LaCrO3 synthesized by combustion method reveals the perovskite phase of the material. The synthesized material has an average crystallite size of 24 nm. The characterization techniques such as X-ray diffraction studies, scanning electron microscopy, transmission electron microscopy etc., were employed to study the average particle size, phase and composition of the material. The effects of constituent phase variation on the dielectric, resistivity and impedance properties are examined. The dielectric dispersion with frequency has been explained on the basis of an electron-hole hopping mechanism, this is responsible for conduction and polarization. From the ac conductivity study, it is confirmed that the conduction in the present material is of small polaron type. Such materials may be useful to fabricate the interconnecting materials for the solar cell, gas sensors, gas transducers, optoelectronic devices, catalyst etc. © 2013 Springer Science+Business Media New York. Source


Khamkar K.A.,University of Pune | Bangale S.V.,Metal Oxide Research Laboratory | Dhapte V.V.,University of Pune | Patil D.R.,Bulk and Nano Materials Research Laboratory | Bamane S.R.,University of Pune
Sensors and Transducers | Year: 2012

Semi conductive nanoparticles of LaAlO3 were synthesized by a solution combustion technique. This process is a convenient, environment friendly, inexpensive and efficient for the preparation of LaAlO3nanomaterial. The synthesized material is characterized by Thermo gravimetric Differential analysis (TG/DTA), X-ray Diffraction studied (XRD), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) techniques. Conductance response of the nanocrystalline LaAlO3 pellet is measured by exposing the pellet to reducing gases like ammonia, ethanol, acetone. The sensor exhibited a fast response and a good recovery. The results demonstrated that LaAlO3 can be used as a gas-sensing material which has a high sensitivity and good selectivity 80% to ammonia gas at 50 ppm. © 2012 IFSA. Source


Khetre S.M.,Dahiwadi College Dahiwadi | Khilare C.J.,Dahiwadi College Dahiwadi | Shivankar V.S.,Modern College Vashi | Bamane S.R.,Metal Oxide Research Laboratory
Sensors and Transducers | Year: 2012

The preparation, characterization and gas sensing properties of pure nanocrystalline LaCrO 3 mixed oxide semiconductors have been investigated. The mixed oxides were obtained by mixing lanthanum nitrate, chromium nitrate and glycine in the 1:1:2 proportions respectively. Synthesized materials were characterized by X-ray diffraction (XRD), Infrared spectroscopy (IR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). LaCrO 3 was observed to be sensitive to acetone gas. Upon exposure to acetone gas, the barrier height of LaCrO 3 intergranular regions decreases markedly due to the chemical transformation of LaCrO 3 into well conducting electrons leading to a drastic decrease in resistance. The crucial gas response 200 ppm was found to acetone gas at 200°C and no cross response was observed to other hazardous and polluting gases. The effects of microstructure on the gas response, selectivity, response and recovery of the sensor in the presence of acetone gas were studied and discussed. © 2012 IFSA. Source


Sawant V.J.,Metal Oxide Research Laboratory | Bamane S.R.,Raja Shripatrao Bhagwantrao College Aundh | Kanase D.G.,Metal Oxide Research Laboratory | Ghosh J.,Smt Kasturbai Walchand College
RSC Advances | Year: 2016

The surface engineering of rutile phase TiO2 nanoparticles was performed by carbogenic carbon dots for biological applications. Carbon dots were synthesized by a green hydrothermal method from the ginger herb and TiO2 nanoparticles were synthesized by co-precipitation of TTIP. The carbon dots were successfully coated over the surface of TiO2 nanoparticles and the hydrophobic multi-therapeutic drug curcumin was wet loaded chemically. These nanostructures were characterized using UV-Vis, PL and FTIR spectroscopy and XRD and TEM analysis. The curcumin loaded C dot coated TiO2 nanoparticles have shown higher anticancer potential than unloaded nanoparticles on MCF-7 breast cancer cells and anti-psoriatic potential on HaCaT keratinocyte skin cells. The enhancement in biocompatibility was observed for curcumin after loading on TiO2 nanoparticles, thus destroying the hydrophobicity after C dot surface engineering. © The Royal Society of Chemistry 2016. Source

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